[devoutsalsa]

Every place in the world does probably. But how would you prove an unmarked, cheap bike was stolen?

[Propelloni]

You wouldn't but nowadays no bike is unmarked, even the cheap ones.

[0cf8612b2e1e]

Can’t you trivially deface an identifier?

[NicoJuicy]

In Belgium, it's a hard to remove sticker on a consistent place with a qr code.

It would take work to remove it cleanly and/or cost money/time to paint over it.

So it's less attractive.

Ps. You'll still need to take care of your 10 k. Bike ofc.

Ps. 2 : engraving isn't done anymore since bike frames got smaller.

[lukan]

How would you know a marked bike was stolen? Does the police offer a public listing of all the stolen bikes?

(I do not think so, but this probably would make sense)

[dghughes]

If you can't and the owner can and if you are caught then you are liable.

[Thorrez]

If the seller threatens to "steal it again".